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2003 Chevrolet Silverado 1500 4.8L Poor Idle Quality, Misfire, MIL Lamp on
scanner shows bad miss on cylinders #1 and #7 with a minor miss on #3 and #5. #2,4,6,8 are not affected at all. after the above repairs swapped injectors and coils with no change. We did an exhaust back pressure test which is way to hi 4-6psi an idle and 1...
Summary posted 2/23/2018
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Related Documents & Media | VIN | 2GCEC19VX3 |
| Engine | 4.8 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Always, Gets Worse as It Warms Up |
Trouble Codes
| P0300 | Multiple Misfire Detected |
Message Closed w/Summary
Vehicle Data
2003 Chevrolet Silverado 1500
| VIN | 2GCEC19VX3 |
| Engine | 4.8 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Always, Gets Worse as It Warms Up |
Trouble Codes
| P0300 | Multiple Misfire Detected |
Video